Detailed Description
A shear web has one job and fails in one way: it resolves the shear flow between the caps, and if the fibre runs the wrong way it cracks diagonally along the matrix. Aluminium web plate avoids that by yielding first, but then it weighs what it weighs, needs edge sealing against the composite, and telegraphs every rivet line into the skin. This sheet is 1K face plies over a 3K twill core, eight plies at ±45 with the 1K face giving a fine, pinhole-free surface that bonds without heavy sanding. At 1.5mm the web adds stiffness only where the geometry wants it and keeps mass out of the wing. The ±45 architecture resolves shear into fibre tension, and autoclave cure holds the thin laminate flat instead of the oil-canning a wet layup leaves behind. Your spar passes proof load with a web you can actually inspect, and the wing keeps its dihedral and washout after transport.
On the engineering points. Layup for a web is driven by shear flow, not bending, so send cap spacing and design shear and we will propose the stack. Porosity is the main risk on thin laminate and is controlled by bleed schedule and autoclave pressure, verified by coupon if specified, with the value Confirm with supplier. Batch consistency across a wing production run comes from lot-tracked prepreg and fixed cure cycles. CNC on 1.5mm sheet uses sharp compression bits, fine-tooth tooling and full-face vacuum fixturing with sacrificial backing to stop exit-side delamination. Temperature and ageing behaviour, Tg, thermal cycling and moisture conditioning Confirm with supplier. Guangdong Shenyang New Material｜ISO9001 & CE certified dry carbon composite manufacturer based in Huizhou, China. Equipped with autoclave, 4.0m×2.0m large-format CNC router and prepreg cold storage. Products for legal export, prototype & mass production available, batch performance traceable.
Specifications
|
Item |
Value |
|---|---|
|
Material system |
T300-grade carbon / epoxy prepreg; 1K face + 3K twill 240g/m² core |
|
Thickness |
1.5mm (8 plies), tolerance ±0.08mm |
|
Layup |
[±45/45/-45/-45/45] shear-optimised, symmetric about web mid-plane |
|
Standard sheet |
1000×1000mm / 1000×2000mm |
|
Fibre volume fraction |
Confirm with supplier |
|
Surface |
1K fine face, peel-ply optional on bonding lands |
|
Machining |
CNC profile, lightening holes, cap slots; ±0.10mm |
|
Thinnest reliable gauge |
1.0mm available, layup Confirm with supplier |
|
Certification |
ISO9001, CE (factory); test report Confirm with supplier |
Applications
Light fixed-wing main spar webs and rear spar webs; high-aspect-ratio glider box-beam shear webs; VTOL wing shear webs; tail-plane spar webs; rib-to-spar reinforcement patches on composite-skin wing surfaces.
Why Choose Us
Thin sheet is where suppliers quietly swap gauge, so we quote ply count and not just millimetres, and the cold-store lot number goes on the pack. The 4.0m×2.0m router nests a whole wing set of webs in one programme, which keeps every web on the same material lot and inside the same cutter wear window. Drone and aircraft parts are exported against a true declared description under applicable dual-use rules. Guangdong Shenyang New Material｜ISO9001 & CE certified dry carbon composite manufacturer based in Huizhou, China. Equipped with autoclave, 4.0m×2.0m large-format CNC router and prepreg cold storage. Products for legal export, prototype & mass production available, batch performance traceable.
FAQ
Q1.Why use ±45 instead of 0/90 for a shear web?
A1.Because the web carries shear, not bending. ±45 turns shear into fibre tension and compression along the tow, while a 0/90 plate loads the matrix in shear and cracks diagonally.
Q2.Can 1.5mm go thinner?
A2.1.0mm is available. Layup and achievable flatness at that gauge Confirm with supplier against your panel size.
Q3.Can this web co-cure with your ribs in one cycle?
A3.Yes, same-batch prepreg and one autoclave cycle, provided the parts are scheduled together. Tell us at quotation stage so the nesting is shared.
Q4.Will lightening holes weaken the web?
A4.Holes are kept out of the high shear flow path and the edges are finished, not flash-cut. Send your web loading and we place the holes rather than guess.
Q5.How are cap bonding lands prepared?
A5.Lands ship with peel-ply on for direct bonding. Adhesive choice and surface prep sequence Confirm with supplier against your resin system.
Q6.MOQ and lead time?
A6.Scheduling follows nesting and autoclave capacity, so a full wing set is more efficient than singletons. Specific MOQ and lead time Confirm with supplier.
Q7.Do you have shear test data?
A7.Batch sampling can be arranged and the report follows the actual test. Factory certification is ISO9001 and CE; untested figures stay Confirm with supplier.
Q8.How does this compare with a fibreglass web?
A8.Carbon holds higher stiffness and lower creep at the same thickness, but costs more and needs care at the bolt lines. Whether the switch pays depends on your wing loading.
Q9.What export documents are needed?
A9.End-use statement, material list and accurate customs description. Aircraft and drone parts are declared as what they are under current dual-use rules.
Q10.Can you hold a tighter thickness tolerance than ±0.08mm?
A10.Tighter control needs a controlled-caul or matched-die route rather than a free-cured sheet, so it is quoted per part. Confirm with supplier.
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